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Finding the Fourth Proportional to 357,394.35, 534,751.58 and 212,771.18

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Solution

The fourth proportional to 357,394.35, 534,751.58 and 212,771.18 is: 318,359.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,394.35 : 534,751.58 = 212,771.18 : x
  2. Step 2: Convert to fraction form
    357,394.35/534,751.58 = 212,771.18/x
  3. Step 3: Cross multiply
    357,394.35x = 534,751.58 × 212,771.18
  4. Step 4: Simplify right side
    357,394.35x = 113,779,724,449.86
  5. Step 5: Solve for x
    x = 113,779,724,449.86/357,394.35
  6. Step 6: Final answer
    x = 318,359.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.